I've been wanting to share this. The doctor's holocam is rather obviously a R/C car radio. In fact, I used to have that exact radio. It's from the Airtronics Avenger line. It's a low-cost 2 channel ground radio for RC vehicles. Nice and rounded, for the 24th century! http://www.airtronics.net/airtronics_Avenger.asp It was a cool prop, but I giggled cuz it was obviously my RC radio.